QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Puerto Rico region

· 20 km deep · released about 890 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Salinas Municipio 25 kmSanta Isabel Municipio 26 kmGuayama Municipio 30 kmJuana Díaz Municipio 36 kmArroyo Municipio 36 kmCoamo Municipio 41 kmCayey Municipio 42 kmPatillas Municipio 43 kmAibonito Municipio 43 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 3.0 (md)
Depth
20 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Salinas Municipio, 25 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1141 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 890 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 380,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 17,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 890 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

Where

Epicentre 17.7447, -66.2855. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Salinas Municipio, PR 25 km (16 mi) S of here earthquakes near Salinas Municipio
Santa Isabel Municipio, PR 26 km (16 mi) SSE of here earthquakes near Santa Isabel Municipio
Guayama Municipio, PR 30 km (19 mi) SSW of here earthquakes near Guayama Municipio
Juana Díaz Municipio, PR 36 km (22 mi) SE of here earthquakes near Juana Díaz Municipio
Arroyo Municipio, PR 36 km (22 mi) SW of here earthquakes near Arroyo Municipio
Coamo Municipio, PR 41 km (25 mi) S of here earthquakes near Coamo Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

24 earthquakes have been recorded within 50 km since this one.

  1. 2.6 8 km S of Orocovis, Puerto Rico
  2. 2.8 5 km ESE of Tallaboa, Puerto Rico
  3. 3.0 12 km SSE of Tallaboa, Puerto Rico
  4. 3.1 10 km S of Lamboglia, Puerto Rico
  5. 2.3 3 km S of Las Ochenta, Puerto Rico
  6. 2.4 4 km WSW of Central Aguirre, Puerto Rico
  7. 2.5 Puerto Rico region
  8. 2.6 28 km S of Tallaboa, Puerto Rico
  9. 2.7 4 km S of Salinas, Puerto Rico
  10. 2.3 4 km SSE of Salinas, Puerto Rico
  11. 1.9 Puerto Rico region
  12. 2.3 1 km SSW of Ponce, Puerto Rico
  13. 2.4 0 km WSW of Ponce, Puerto Rico
  14. 2.4 15 km SSE of Central Aguirre, Puerto Rico
  15. 2.4 15 km S of Central Aguirre, Puerto Rico

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 5.6 on 2020-01-07 — it released about 8,500 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.